Journal-bearing.



No. 748,258. PATBNTBD 1350.29, 190s. J. BUKBR. JOURNAL BEARING.

- APPLIOATION Hum MAR. 2a, 190s.

No MODEL. 2 SHEETS-s111151' 1.

No. 748,253. f i BATBNTED DEG. 29, 1903.

'1. BUKER. JOURNAL BEARING.

IIIIIIIIIIIIIIIII AR. 23, 1903.

Nd Mon E L 2 s H E E T s s H E n T 2.

M/265563', (iff/0277521' UNITED STATES Patented December 29, 1903.

JAMES BUKER, CF CHICAGO, ILLINOI.

JOURNAL-BEARING.

' SPECIFICATION forming part of Letters Patent No. 748,258, dated December 29, 1903.

i Application filed March 23, 1903. Serial No. 149,066. (No model.)

.To a/ZZ whom t may concern:

y Beit known that I, JAMES BUKER, a citizen of the United States of America, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Journal -Bearings, of which the following is a description.

l My invention belongs to that class of bearings particularly adapted for use in car con struction, and has for its object the production of a simpleand eective bearing of the kind described at a reasonable cost and at the same time to greatly increase the durability or wearing power of the device.

To this end my invention consists in the Anovel construction, arrangement, and combination of parts herein shown and described, and more particularly pointed out in the claims. Y

In the drawings, wherein like reference characters indicate like or corresponding parts, Figure 1 is a perspective view of the wedge or key of acar journal-bearing. Fig. 2 is a similar view of the brass of the same. Fig. 3 isavertical longitudinal section taken substantially on line 3 3 of Fig. 4. Fig. 4 is a vertical transverse section taken on line 4 4 of Fig. 3, and Fig. 5 is a bottom plan of the keyor wedge.

In the drawings, l represents the brass for a car journal-bearing, provided on its upper surface with a plurality of projections 2 2, preferably oval or elliptical in outline, as shown. The brass is also preferably formed with inclined sides 3 3 in the usual manner to aid in assembling the parts and maintaining them in proper relative position.

5 is the key or wedge adapted for use with the brass just described. The key 'is provided with inclined dependent sides 6 6,adapt ed to loosely embrace the inclined sides 3 3 of the brass, and also with depressions 7 7, so formed and arranged as to loosely engage the projections 2 2 en the brass; As shown, there are two of such elliptical or oval projections 2, and accordingly two of the depressions 7. As thus formed a web or bridge S is formed between the depressions 7 7 to greatly strengthen the key. When the parts are assembled, the bridge 8 is loosely positioned between the projections 2 2 of the brass, which is particularly formed for this purpose. The various, parts of the key or wedge and the brass are so constructed as to permit both longitudinal and lateral play of the parts upon one another to a limited' extent, as shown in Figs. 3 and 4. This construction permits the requisite play for proper action when the car is rounding a curve or on a rough track to accommodate the parts to a slight movement of the car. The wedge is preferably provided with the usual lugs 9, constructed to engage corresponding parts on the side of the journal-box to hold the wedge in its proper position. maybe similarly provided, if desired; but in the preferred construction the usual lugs upon the brass are omitted, thus reducing the weight withoutin any waydetracting from the efficiency of the construction. The tops of the projections 2 2 may be either fiat or crowned, as preferred, and it will be'observed that, as shown, they are greater in height than the depth of the depressions 7 in the wedge, thus permitting the wedge to rest upon the top of the projections, as shown. In this construction the connecting web or bridge 8 is important, as it adds greatly to the strength of the wedge or key, and thus increases the durability of the device and at the same time permits the brass to be cut away at that point, reducingthe weightwithout reducing its wearing value.

My improved brass, as well also the key or wedge, is readily interchangeable with the corresponding parts of the Master Car-Builders standard j ournal-bearings now in general use. When used together, however, they embody valuable improvements not found in the standard parts.

I have used the terms oval and elliptical in my description as synonymous terms to distinguish the form from rectangular. By curving or rounding the projections both longitudinally and laterally the parts will more readily assume their proper relative positions whether from side or end thereto. This result is also aided by slightly .crowning the projections 2.

After thus describing my improvementit is obvious that various immaterial-modifications may be made without departing from The brass ICO the spirit of my invention. Hence I do not wish to be understood as limiting myself to the exact form and construction shown.

Having thus described my invention, what I claim as new,and desire to secure by Letters Patent, is-

l. A carjournalbearing,comprisingabrass, provided with a plurality ot' projections extending from its upper face, the portion between the projections having a at upper surface, in combination with a wedge or key provided on its under surface with corresponding depressions adapted to loosely embrace the projections on the brass, the said depressions being separated bya reinforcingbridge having a flat lower surface,and loosely positioned between the projections on the brass.

2. A car-journal, comprising a brass provided with a plurality of projections extending from its upper surface, and with inclined sides,the portion between the projections being continuous and uninterrupted so as to afford a smooth bearing-surface, in combination with a key ,or wedge provided with corresponding depressions adapted to loosely engage the depressions on the brass, and with inclined sides, the depressions being separated by a reinforcing-bridge havingasmooth uninterrupted lower surface,and being spaced from the adjacent ends of the projections on the brass.

3f Acarjournal-bearing comprisingabrass provided with a plurality of projections extending from its upper surface, said projections being elliptical in outline and separated from each other by unobstructed spaces, in combination with a key provided on its lower surface with corresponding depressions adapted to loosely embrace the projections on the brass, the said depressions being separated by a bridge spaced from the adjacent ends of the projections on the brass, and said bridge having a flat lower surface arranged to fit within the unobstructed spaces between the projections on the brass.

4. Acarjournal-bearingcomprisingabrass, provided with a' plurality of projections eX- tending from its upper surface, said projections being elliptical in outline and slightly crowning, in combination with a wedge or key provided on its lower surface with corresponding depressions adapted to loosely embrace the projections on the brass, said projections being greater in height than the depth of the depressions, and said depressions being separated by a bridge or wall spaced from the adjacent ends of the projections on the brass.

5. Acarjournal-bearingcomprisingabrass, provided with a pair of elliptical projections upon its upper surface, said projections being separated from each other by an unobstructed space, in combination with a wedge provided on its lower surface with a centrally-.arranged reinforcing-bridge extending its entire width and havingacontinuous uninterrupted lower surface complementary to the unobstructed space between the projec':

tions on the brass, and depressions arranged intermediate the reinforcing-strip and the respective ends of the brass, adapted to engage the projections on the brass.

In testimony 4whereof I have hereunto signed my name in the presence of two subscribing witnesses. JAMES BUKER.

Witnesses:

JOHN W. HILL, CHARLES I. COBB. 

